PSA Freedom AR-15 Barrel 16" 5.56 NATO 1:7 Mid-Length 4150V Nitride

16" Barrel Length4150V SteelMidlength Gas SystemA2-style profileMelonite Finish5.56 NATO Chamber1 in 7" Barrel TwistUses 0.75" gas block"5.56 NATO 1/7 FREEDOM" roll mark Please check the barrel closely for any irregularities. It is the builder's responsibility to check headspace before assembling.In the unlikely event you have an obvious issue with a barrel, STOP AND DO NOT ASSEMBLE or modify. Contact Customer Service for warranty replacement. Barrel is non-returnable if it has been installed, fired or modified from original shipped state.